Sunspot drawing of 1974-4-9

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https://doi.org/10.7891/e-manuscripta-97767



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1974-04-09
07:15
Hs 1304.5:5337
https://doi.org/10.7891/e-manuscripta-97767
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 5 B 12.1 259.3
40 35 B -12.9 182.6
41 5 B -5.0 215.2
42 9 A -15.1 164.1
4 54